Menopause, or the cessation of menstrual periods, generally occurs in the 40s and 50s and marks the cessation of fertility, although age-related infertility can occur before then.
Silky lupine grows in northern areas from Washington and Oregon east to South Dakota. Tailcup lupine is found in Oregon, California, Idaho, Utah, Montana, and Wyoming. Velvet lupine is found in an intermountain region from Oregon to Wyoming. Silvery lupine occurs from North Dakota and Idaho south to Arizona and New Mexico.
(See below for the Russell Hybrid story.). Lupine plants are famous for loving sandy soil. (This is why they often grow near beaches and in other other places with light, loose soils.) It's because they form long tap roots, and have to drive that root down deep into the soil. They can succeed on heavier soils, even clay, but the growth will be slower.